[NotTaken]

Changed to jsbrowser and calibre forking (still requires a plugin - attached) :

from calibre.web.feeds.news import BasicNewsRecipe
import os
from calibre.utils.ipc.simple_worker import *
from calibre_plugins.recipe_fork_helper import wrapper
import tempfile

dummy_module = '''

import calibre.web.jsbrowser.browser as jsbrowser

def grab(url):
    browser = jsbrowser.Browser()
    #10 second timeout
    browser.visit(url, 10)
    browser.run_for_a_time(10)
    html = browser.html
    browser.close()
    return html

    '''
class MarketingSensoriale(BasicNewsRecipe):

    title                 = u'Marketing sensoriale'
    description           = 'Marketing Sensoriale, il Blog'
    category              = 'Blog'
    oldest_article        = 7
    max_articles_per_feed = 200
    no_stylesheets        = True
    encoding              = 'utf8'
    use_embedded_content  = False
    language              = 'it'
    remove_empty_feeds    = True
    recursions = 0
    auto_cleanup = False
    delay = 0.00000001

    remove_tags_after    = [dict(name='div', attrs={'class':['article-footer']})]
    

    def get_article_url(self, article):
        return article.get('feedburner_origlink',  None)

    def preprocess_raw_html(self, raw, url):
        temp_handle, temp_path = tempfile.mkstemp()
        try:
            f = os.fdopen(temp_handle,'w')
            f.write(dummy_module)
        finally:
            f.close()      
            
        result = fork_job('calibre_plugins.recipe_fork_helper','wrapper',(temp_path, 'grab',(url)))
        
        try:
            os.remove(temp_path)
        except:
            print 'could not delete temp file:' + temp_path
            
        html = result['result']
        return html


    feeds          = [(u'Marketing sensoriale', u'http://feeds.feedburner.com/MarketingSensoriale?format=xml')]

Plugin loads a module from a file containing python source and calls function given in second argument. Couldn't find a way to import the recipe over on the dark side (child process). Maybe someone knows how?

Edit: i.e. can you provide a well defined module name of the recipe directly to fork_job (so all code is contained within recipe)